The first incursion of the Northmen took place in A.D.
Af ter spending the winter in organizing a cavalry force, he made a successful incursion into Lydia in the spring of 395.
The Servian incursion was followed by a great Albanian emigration to the southern regions of the Peninsula.
By securing a loan from the Church and suspending the corn-distribution at Constantinople, he raised sufficient funds for war, and after making a treaty with the Avars, who had nearly surprised the capital during an incursion in 619, he was at last able to take the field against Persia.
The story goes that the ardri Aed Oirdnigthe (797-819) made a hostile incursion into Leinster and forced the primate of Armagh and all his clergy to attend him.